面试题与答案

Apache camel provides us with a number of components. These components make interacting create endpoints with which a system can interact with other external systems. For example using an ActiveMQ component we expose an ActiveMQ endpoint for interaction with external system. There are more than 100 components provided by Apache Camel. Some of them are FTP, JMX, Webservices, HTTP. Apache camel also allows users to create custom components. It also provides different connector components to interact with Cloud services (AWS/Azure etc).

You can call database using apache camel component.

You can expose the REST webservice API endpoint using Apache camel  (JAX-RS or CXFRS).

 

Using CamelSpringTestSupport.

 

Exception can be handled using the <try> <catch> block, <OnException> block or the <errorHandler> block.
The errorHandler is used to handle any uncaught Exception that gets thrown during the routing and processing of a message. Conversely, onException is used to handle specific Exception types when they are thrown.

It is now possible to define routes outside <camelContext/> which you do in a new <routeContext/> tag. The routes defined in <routeContext/> can be reused by multiple <camelContext/>. However its only the definition which is reused. At runtime each CamelContext will create its own instance of the route based on the definition.

You can use Spring boot with Apache Camel.